Question

Swati can row her boat at a speed of 5km/hr in still water. If it takes her 1 hour more to row the boat 5.25km upstream then to return downstream find the speed

Answer 1

Answer:

Step-by-step explanation:

Let the speed of the stream be x km/h

Speed of the boat in upstream = (5 - x)km/h

Speed of the boat in downstream = (5 + x)km/h

Time, say t1 (in hours), for going 5.25 km upstream =5.25/5-x

Time, say t2 (in hours), for returning 5.25 km downstream=5.25/5+x

Obviously t1 > t2

Therefore, according to the given condition of the problem,

t1 = t2 + 1

This gives x = 2, since we reject x=-25/2.

Thus, the speed of the stream is 2 km/h.

Answer 2

Step-by-step explanation:

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